The continents went under water, the Arctic Ocean melted, people survived only on islands far beyond the Arctic Circle and called themselves Hyperboreans. Their life is hard and dangerous: tsunamis hit their islands, there is little oxygen in the air, their children die... But over two hundred years of survival, people have learned to unite, hold on to each other, sacrifice themselves for the sake of others. February, the month of storms, squalls and snow thunderstorms . The rescue boat sinks before reaching its destination - an island in the Spitsbergen archipelago. Miraculously, only the expedition's medical expert remains alive. He is alone on a cold island and hopes to find people there, but he finds only the dead, the secret of whose death must be learned...